US1696672A - Apparatus for making lock-nut blanks - Google Patents

Description

Dec. 25, 1928.

I. c. EMERY I APPARATUS FOR MAKING LOCK NUT BLANKS 6- Sheets-Sheet 1 Filed Oct. 1925 17 INYENTOR BY 2- CLEm 6 3] T ORNE Y Dec. 25, 1928. v 1,696,672

I. C. EMERY APPARATUS FOR MAKING LOCK NUT BLANKS Filed Oct. 8, 1925 6 Sheets-Sheet 2 i! INVENTOQR A V A v ORNEY 1,696,672 I. c. EMERY APPARATUS FOR MAKING LOCK NUT BLANKS 6 slidflt's-asheef. 3

INVENIOR I C. Emery BY' 2 a; A ORNEY Dec. 25, 1928.

I. c. EMERY APPARATUS FOR MAKING LOCK NW1 BLANKS Fiied 0st,; 8, 1925 INVENTOR the arrows;

Patented Dec. 25, 1928.

UNITEDSTATES PATENT oFFi I. c. sunny, or sammoan, MARYLAND, assmnon To examine am Locxnwo an comrm or BALTIMORE, MARYLAND, TRUSTEES or A common-Law 'r'nvs'r ESTATE.

arrarmrus FOR MAKING Loon-nor manna.

' Application filed October 8, 1925. Serial 1%. 81,255. 1

This invention relates to an apparatus for making lock nut blanks and has for its object to improve the means heretofore prosed. I With this and other objects in view the invention consists in the novel steps and combination of steps constituting the process and in the novel parts and combinations of parts constituting the apparatus all as will be more fully hereinafter disclosed and pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views:

Fig. 1 is a side elevational view partially broken away of a machine made in accordance with this invention;

Fig. 2 is a sectional view taken on the line particularly 22 of Fig. 1, looking in the direction of'the arrows;

Fig. 3. is an end elevational viewof a. portion of the parts shown in Fig. 1;

Fig. 4 is a sectional view taken on the line 44 of Fig. 2,'looki ng in the direction of the arrows;

Fig. 5 isa sectional view taken on the line 5-5 of Fig. 1, looking in the direct-ion of the arrows;

Fig. 6 is a sectional view taken on the line 66 of Fig. 3, looking in the direction of Fig. 7 is a detail showing one position of the parts before the partially formed blank is pushed from-its forming die onto its swaging die;

Fig. 8 is an elevational and partially sec- 2 tional view of a portion of the parts shown in 7 tion;

tobe flatten or swa-ged;

Fig. 12 is a sectional view bf the parts. shown in Fig. 1 1 after the 'swaging action has I taken place;

partially sectional view eformingr has moved the.

Fig. 11 is a sectional view taken on'theline 11-11 of Fi 10 showing the blank ready- Fig. 13 is an enlarged detail sectional view of a; portion of the parts shown in Fi 12; Fig. 14 is a perspective view of the finished nut blank before it has been perforated and threaded;

Fig. 15 is a perspective view of a drop forg ing or' casting forming a base member of the machine; 1 a

portion of a somewhat modified form of'machine especially adapted for making large sized nut blanks;

Fig. '17 is a sectional view taken on the line 1717 of Fig. 16, lookingin the direction of the arrows;

Fig. 18 is a. sectional view taken on the line 18- -18 of Fig. 17, looking in the direction of the arrows;

Fig. 19 is a sectional view illustratin the position of the arts after the blank has een moved over to t 1e knife edge former and sub -jected toa swaging action;

Fig. 20 is a sectional view taken on the line 20-20 of Fig. '19, looking in the direction of the arrows; I r

' Fig. 21 is a detailed sectional view of a porion of the parts associated with the swaging Fig. 22 is a detailed sectional view of the parts shown in Fig. 21 when the said parts are in a different position of operation;

Fig. 23 is a perspective view of the split slide employed in this modified form of the invention;

, Fig. 24 is a perspective view and a sideelevational view of the'large size nut blank made on this modified form of machine:

Fig. 25 is a view similar to Fig. 24 showing the condition of the nut prevail were the machine Fig. 16 is a sectional view of the forming 2 blank that would I not provided withthe split slide shownin Fig. 23.

I Referring first to Fig. 15 Ire drop forging or'casting forming! e'mein ber of this machine which is of the shape shown. That is to say, thisbase member 1 is'pro'videdwith the end members 2nd 8 spaces 4 and 5,

and said end members 211ml 3 and is provided at one side with the cut-out i groove; or. channel ;7, and on top surface the connecting member separated by the vertically disposed bllow with the widened groove or channel8 form 14 areg'connecte'dfby any provided ing a slide way. Said member 3 is provided with the slide tttl w ich is somewhat similar to the slideway 8. The member 2 is provided with a vertically disposed rectangular passage, channe-lor well 110, and the member 3 is rovided with the similar well 11. As will clear from the other figures, and especially Figures 11 and 12 there recip'rocates the plunger I cover plate 30 extends above the end member 3 through which the plunger member 14 place by and resting which passes, as best shown in Figs. 11 and 12. It will further be observed from the above mentioned figures that between the cover plates 18 and 19 and the to surface of the member 2 thereflisdisposed t e compressing slide or swagingmember 20, and between the cover plate'30 and thetop surface of the member 3 there isdisposed the swaging slide or member 21. In the recess 7 of the portion 2, Fig. 13, there is placed the hardened steel member 22, see Figs. 1 and 2, and this member has its with the top surface 24 top surface 23 flush of the member 2, so t at its. upper edge 25,

' Fig. 4, constitutes a cutting edge. A portion of the cover plate'is cutaway to form'the passage 26 through'which the stock '27 to be formed into nut blanks may be fed as will be clear from Figs. 1 and 4. 7

Into the space 4. see Fig. 15, there is dropped or wedged theblock 31, see Fig. 4, block is provided with the hardened fiat steel blade, or forming die 32, held in the pin 33, and whose tapered end 34 stops just below the stock material 27 as shown. In close proximity to the block- 31 upon the surface 35, Fig. 15, is placed the hardenedsteel bloc-k 36, Fig. 12, which carries the hardened steel knife blade or separator the surface 35 arti- I space 46 and thus eject the blank 47 after forming action is bad. Said pin 50 and head '55 is compressed due to the members 37 secured to the block 36 as bv the pin 38 illustrated in Figs. 7, 10 and 11.

Figs. 3 and 4. As said punch 40 continues to descend its cut away or hollowed out portion 46 straddles the forming die 32 and bends the cut off stock down on both sides of the tapered end portion 34, thus forming the blank 47 into the V-shape shown in Figs. 8 and 9.

The stock strip 27 is fed-to its posit-ion beneath the plunger or punch 40 by hand or by any suitable means not shown, and its extreme end edge contacts with the plate 30 which forms a stop for the feeding motion when the right length of the strip is beneath the punch 40 all as will be clear from Fig. 4.

As the plunger 40 rises from the forming position shown in Fig. 8 to the position shown in Fig. 3, the partly formed blank 47 is liable to find itself wedged into the space 46 of said plunger 40, and to rise with it. To prevent this there is provided the eject-or pin 50, which is adapted to reciprocate in a bore of said plunger 40. That is, said pin 50 is provided with an enlarged or shouldered portion 51 which permits said pin to descend to such a distance that only its extreme end 52 can descend a short distance below the top of the the 51 is controlled by the member 54, controlled in turn by the spring whose compression is governed by the screw 56. It thus results I that when the plunger 40 descends the spring 50 and 54 rising into the positions shown in Fig. 8 and when the plunger 40 begins to ascend the i said spring 55 expands thus forcing the end 52 of the pin 50 into the position shown in Fig. 9,and at the same time expelling the partly formed blank, 47 out of the space 46, whereupon said blank falls back upon the tapered end 34 ofthe blade or die After the blank 47 has thus been replaced upon the top of the die 32. the parts are so timed that the longitudinally disposed finger 60 moves toward the right as seen in ig. 6 and pushes said blank off of the tapered end 34 of the die 32 and onto the thin blade like separator 37. It should be stated that as will be clear from Fig. 1, the power actuated member 61 of the machine is reciprocated up and down by means, not shown, and said motions in turn move up the pitman member 62 controlled in its down movement by the spring 63, and that this said member 62 in turn being pivoted as at, 64 to the bell crank 65, which in turn is pivoted as at 66 to the machine, reciprocates through the slot 67 and pin 68 the said horizontally disposed member 60 all as will be clear from Figs. 1 and .6 of the drawings. The extreme end of said member 60, however. is provided with the hollow member 70 which is U-shaped in cross section and thus straddles the die member 32 as will be clear from Fig. 6 to facilitate the movement of the pari of the crown the positions The partially formed blank 47 being thus brought into position on the separator 37 beneath the swaging punch 41, said'punch de scend's along with the plunger member 40 and with the cross head 15, down upon said partially formed blank 47, immediately after the swaging or compressing members 20 and 21 have compressed the said blank47 into the shape shown in Fig. 12. That is to say, as the cross head 15-descends it carries down with it not only the plungers 40 and 41' but also the cam members 13 and 14 provided with the cams 71 and 72 respectively which coact with the co-rresponding'cams 7 and '7 4 respectively to move said die members 20 and 21 from the positions shown in Fig. 11, to shown in Fig. 12. Immediately after this compressing action upon the nut blank 47 is had, the swaging punch 41 descends as best shown in Figs. 12 and '13 and suitably shapes the nut blank 47 into the form illustrated in Fig. 14. Upon the rising of the cross head 15 the members 13 and 14.rise from the positions shown in Fig. 12 to the positions shown in Fig. 11, whereupon the cam members 75 and 76 take against the cam surfaces 77 and 78 respectively of the compressing member-s20 and 21 and return said'members from the positions shown in F 12 to the positions shown in Fig; 11. The parts are now ready for another portion of the stock material 27 to be cut off by the edge 43 of the plunger 40 and to be partially formed into the V-shape shown in inpositionfor said partially formed blank 47 to be pushed toward the right as seen in F ig.'*7 by the member 70 of the reciprocating plunger 60. As we now have the completed nut blank 80 shown in Fig. 14 resting upon the separator '37, the movement of this second V-shaped partially formed blank 47 to-.

ward the right as seen in Figs. 7 and 10 will cause said completely formed nut blank 80 to be pushed toward the right off of the separa-' tor 37; and thislatter finished blank 80 will thus slide down the incline 81, see Fig. 6, and through the space 5, see Fig. 15, into a suitable receptacle not shown.

In the somewhat modified form of the in.- vention shown in Figs. 16 to 25 inclusive, a defect which appears in the finished blanks 80 made on the precedingi'nechanism is cured. That is'to say, it has been foun'd'that when blanks of a moderately large size are formed in the manner just disclosed theu' per edges portions 84 are bulge out as in dicated at 85 m Figs. 25while small sized nut blanks do not show this defect. That-is ,to say, when the swaging plunger 4l'descends as indicated onto the larger sizes of nut blanks the metal flows laterally as indicated at 85 in operationto Fig. 25, thus requiring another Figs. 9 and 11, and are.

remove these projectionsand it is the purposeof this modified form of construction to do away with this objection.

mentioned Figures 16 to 25, the-same parts are lettered with the same numerals as in the preceding figures and theoperation of said parts Referring more particularly to the above are the same as in the preceding figures. But the slidable horizontally disposed compressing plates or members 20 and 21in the pre cedlng figures are greatly narrowedin this modified form of invention and are lettered 9O and'9l respectively. Thisnarr owing of the plates and 91 leaves or channel on each side-of ;the said plates in which reciprocates the splitslide member 92 all as will be. clear from Figs. 20 and 21.

Said split slide member is provided with the side members 93 and 94-which are separated by the space 95 and which reciprocate on each side of the slides 90 and 9l,'and said side members 93 and 94 areprovided with the cut away portions or . rectangular openings 96 and 97 respectively, as best shown'in Fig. 21. The said split slide member 92 is also provided with the pin or other to which" is attached the fork like members 99 A'igid with the oscillating member 100 mounted on the shaft 101 which is rocked by any suitable means such for example as the arm provided with thefork 111 that may be fconnectedto the pitmanmember 62 all as will be clear from Figs. 1 and 17. It thus results that the parts being properly timed and I proportioned, and in the position shown in Figs. 19' and 20, the side members straddle the partly finished blank is resting upon the knife blade or separator 37, and they hug so tightly the wings 102 of the enlarged blank 103 illustrated in Fig. 24, I

CTOYVD as isshown in Fig. 24, that is smooth at the point 104; and, therefore, it needs no second operation to finish the same ready for perforating-and threading. .On the other hand, the parts are likewise so timed and proportioned that when the partly finished blank '47 restsupon theupper ta formingdie 32, as'be'st il the openings 96 and 97 of thesplit slide meme a " considerable space 93 and 94. 47 when it cred end 34'0f the". ustrated in Fig. 16,;

90 connection 98 cannot under the swaging action Fig. 25 or when I ber '92-regist'er with said blank47, and thus enable 6, t9 y from the die member 32 ontothe knife blade separator 37 as disclosed above, whereupon the plunger 41 after the parts have been compressed by the members 90. and 91 comes down onto the crown a pusher member 60 illustrated in Fi and swag es the sameinto shape, all as will be understood from the preceding description portion 84 of said. blank push over the partly finished blank 47 I no. suit is a finished nut blank of large size, such shoved off the tapered'ed e same as the opening 5 in Fig. 15, and into a smaller recess; a

receptacle not shown.

It will now be clear that by constructing a machine in the manner above disclosed and providing the drop forging orcasting 1 made from a single piece of metal, one is enabled to greatly simplify the machine and to omit many moving parts that would otherwise have to be provided. It will also be apparent that by providing the split slide member 92 one is enabled to so confine the metal being swaged as to prevent an undesirableflow of the metal when large sized nut blanks are being made and to thus avoid a second finishing operation. It will also be apparent that this swaging action whether the member 92 is or is not used provides a nut blank having the bent over straight wings 102 united by the crown portion 84 in which the density of the metal will be increased due to the heavy compression to which it is subjected. It will further be clear that the finished blank isperforated as indicated by the dotted line circle 114 and later threaded by means not shown. Due to the employment of the casting or forging 1, the block 31 carrying theblank bending or folding die or post 32 may be readily attached to and detached from the said memher 1, for it is only necessary to wedge said block into the space 6, Fig. 15, where it is to be used and to drive or otherwise force it out of said space when it 's to be taken out for re pairs or for other purposes. Substantially the same remarks apply to the block 36 and separator 37 both of which are readily wedged into position in the space 35, Fig. 15, and forced out of position for repairs, or for other purposes when the block 31 has been removed. All the removable parts may thus be made of hardened steel and readily relaced when worn out. I

What is claimed is:

1. In a machine for making lock nut blanks the combination of a base member, provided with two end portions separated by a vertically disposed recess and provided with a block disposed in said smaller recess; a swaging die carried by said block; a block disposed in said first named recess; a folding die carried by said last;

named member to hold and to facilitate the feeding of a strip of metal to be cut; I above said base member provided with a cutting means and with a folding means block; means carried by saidbase,

a plunger located adapted to out said .metal and fold the same over said disposed above said-base member adapted to swage any metal placed above said first named swaging die; and means to reciprocate said folding and swaging plungers.

2. In a machine for making lock nut bl anks the combination of a base member provided with two end portions; folding and swaging dies carried by said base member; blank compressing means also carried by said end portions; folding and swaging plun ers disposed above said base member adapted to fold and swage blanks disposed on said first named folding and swaging dies; and means to reciprocate said folding and swaging plungers toward and from said first named folding and swaging dies.

3. In a machine for making lock nut blanks the combination of a base member provided with two, end (portions separated by a vertically dispose recess and provided with a smaller recess; a readily attachableand detachable block disposed in said smaller rccess; a separator carried by said block; a readily attachable and detachable block disposed in said first named recess; a folding die carried by said last named block; means comprising a recessed cover niember carried by said base member to hold and to facilitate the feeding of a strip of metal to be cut; a cutting member carried by said base member; a plunger located above said base memberprovided with a cutting means adapted to coact with said first named cutting member and with a folding means adapted to fold the same over said folding die; a swaging plunger folding die; a swaging plunger also also disposed above said base member adapted to' swage any metal placed above said separator; and means to reciprocate said folding and swaging pl'ungers.

4. In a machine for making lock nut blanks the combination of a base member provided with two end portions having horizontally disposed recesses; folding and swaging dies carried by said base member; blank compressing means also carried by said end ortions and disposed in said recesses; fol ing disposed above said to fold and swage and swaging plungers base member adapted ,blanks disposed on-said first named folding and swaging dies; means to reciprocate said blank compressing means; and means to reciprocate said folding-and swaging plungers toward and from said first named folding and swa'ging dies. j

5. In a machine for making lock nut blanks the combination of a base member provided with two end portions; folding and swaging dies carried by said base member; horizontally disposed compressing members carried by said end portions; cam members coacting with said compressin members to r'ecipro cate the same in said ase member; reciproeating folding and swagmg plungers coacting with said first named folding and swaging dies; means to reciprocate said cam memrs and said folding and swaging plungers; means comprising a'reciprocating member to transfer a partially folded blank from said first named folding-die to said first named swaging die; and means comprising a bell crank connected to said last named means.

6. In a machine for making lock nut blanks from metal strips, the combination of a base member providedwith two end portions separated on one side by a pair of vertically disposed recesses and provided with a pair of horizontally disposed recesses; said base member also provided in each end portion with a well passing from said last named recesses down into each endportion; readily attachable and detachable folding and swagingdies located in said vertically disposed recesses; reciprocating compressing dies located in said horizontally disposed recesses; a cutting means carried by said base member; a pair of reciprocating members provided with cam surfaces movable up and down in said wells; folding and swaging plungers coacting with said first named folding and swaging dies; and a reciprocating cutt ng means coacting with said first named cuttlng means;

7. In a machine for making lock nut blanks from metal strips, the combination of a base member provided with two end portions separated on one side by a pair of ver-.

ti-cally disposed recesses and provided with a pair of horizontally disposed recesses; sald base member also provided in each end portion with a well passing from said last named recesses down into each end portion; readily attachable and detachable folding and swaging dies located in said vertically disposed recesses;'a reciprocating means provided with an end portion U -shaped in cross section for transferring a partially formed blank from said folding die tosaid swaging die; reciprocating compressing dies located in said horizontally disposed recesses; a readily attachable and detachable cutting means carried by said base member; a pair of reciprocating members provided with cam surfaces movable up and down in said wells; folding and swaging plungers coacting with said first named folding and swaging dies; and a reciprocating cutting means carried by said folding plunger coacting withsaid first named cutting means.

8. In a machine for makinglock nut blanks having a base member made from a single piece of metal, provided with two end portions separated by cesses and also provided-with horizontally disposed recesses 111 said end portions in combination with cutting means, a die folding means, and die swaging means located in said recesses. I

9. In a machine for making lock nut blanks blanks the combination of vertically disposed 'retions separated by vertically cesses and also provided with disposed recesses in said end portions in combination Withcutting means, a die folding means, and die swaging means located in said recesses; and with reciprocating folding, swaging, and blank transferring means located outside said recesses 10. In a machine for making lock nut blanks the combination of a base member provided with two end" portions having horizontally disposed recesses; folding and swaging dies carried by said base member; blank compressing means also carried by said 'end portions and disposed in said recesses; means located in said recesses to prevent the metal from spreading when subjected to a compressing action; folding: and'swaging plungers disposed above said base member adapted to fold and swage blanks disposed on said first named folding and swaging dies; means to reciprocate said blank compressing means; and means to reciprocate said folding and swaging plungers.

In a machine for making lock nutv blanks the combination of a base member; folding and swaging dies carried by said base member; blank compressing means also carried by said base member; reciprocating means adapted to confine and prevent the flow of metal from the edge portions of the blank being operated upon also carried by said base member; reciprocating folding and swaging' plungers disposed above said base member adapted to fold and swage blanks disposed on said first named folding and swagi'ng dies;

having a base member made from a single piece ofmetal, provided with two end pordisposed irehorizontally means to reciprocate said compressing means;

and means to reciprocate said folding and swaging plungers toward and from said first named folding and swaging dies.

12. In a machine for making lock nut a base member provided with two end portions having horizontally disposed recesses; stationary folding and swaging dies-carried by said base member; horizontally disposed, reciprocating blank compressing means also carried by said end portions and disposed in said recesses; means located in said recesses on each side of said compressing means adapted to prevent the metal from spreading when sub- ;ected to a compressing action;-folding and swaging plungers disposed above said base member adapted to fold and swage blanks disposed on said first named folding and swaging dies; means to reciprocate said blank compressing means; and means to reciprocate said. folding and swaging plungers.

13. In a machine for making lock nut blanks the combination of a base member provided with two end portions having horizontally disposed recesses; folding and swaging dies carried by said base member; blank compressing means also carried by'said end saidm eans adapted to contact with and conportions and disposed in said recesses; means fine the edges of said blank during the swaglocated in said recesses to prevent the metal ing operation and prevent the metal from from, spreading when subjected to a-compressspreading, said member provided with aper- I ing action comprising a reciprocating slidtures through which the blank is received and able member provided with members disposed discharged.

on each side of said compressing means, fold- 17. In a machine for making folded lock ing and swaging plungers dis osed above said nut blanks the combination of means to fold base member adapted to old and swage and swage said blanks into the desired shape; 1o blanks disposed on said first named folding a reciprocating member coacting with said and swaging dies; means to reciprocate said means provided with a cut away portion and blank compressing means; and means to readapted to contact with and confine the edgesciprocate said folding and swaging plungers. of said blank during the swaging operation 14. In a machine for making folded lock and prevent the metal from spreading; and

nut blanks-the combination of a blank ioldmea s to di h rg th finished blank through 1 ingmeans; a blank swaging means; and a said cut away portion.

a movable :meansadapted to confine the edg s 18. In a machine for making folded lock of the blank and prevent the metal from nut blanks the combination of means to fold spreading during the swaging operation, said a d wag aid blanks; movable, means promeans so formed as to permit the blank being vided with a out away portion and coacting passed thereinto from the folding means. with said swaging means to prevent the metal 15. Inamachineformaking folded lock nut from spreading during the s'waging operablanks the combination of a blank folding tion; and means to move the finished blank means; a blank swaging means; and amovthrough said cut away portion.

able means comprising areciprocating slide 19. In a machine for making folded lock member adapted to confine the edges of the nut blanks the combination of means to fold blank and prevent the metal from spreading and swage said blanks; movable means comduring the swaging operation, said member prising a split slide member provided with providedwith an opening in one of its sides a cut away portion and coacting with said through which the blank is passed from the swaging means to prevent the metal from folding means, spreading during the swaging operation; and

16. In a machine for making folded lock reciprocating means to move the'finished nut blanks the combination of means to fold blank through said cut away portion: and'swage said blanks into the desired shape; 7 In testimony whereof I aifix my signature. an'd'a reciprocating member coacting with a I. C. EMERY.

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